1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD$ 34 */ 35 36 #if defined(LIBC_SCCS) && !defined(lint) 37 #if 0 38 static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93"; 39 #endif 40 static const char rcsid[] = 41 "$FreeBSD$"; 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <sys/param.h> 45 #include <signal.h> 46 47 int 48 sigvec(signo, sv, osv) 49 int signo; 50 struct sigvec *sv, *osv; 51 { 52 struct sigaction sa, osa; 53 struct sigaction *sap, *osap; 54 int ret; 55 56 if (sv != NULL) { 57 sa.sa_handler = sv->sv_handler; 58 sa.sa_flags = sv->sv_flags ^ SV_INTERRUPT; 59 sigemptyset(&sa.sa_mask); 60 sa.sa_mask.__bits[0] = sv->sv_mask; 61 sap = &sa; 62 } else 63 sap = NULL; 64 osap = osv != NULL ? &osa : NULL; 65 ret = sigaction(signo, sap, osap); 66 if (ret == 0 && osv != NULL) { 67 osv->sv_handler = osa.sa_handler; 68 osv->sv_flags = osa.sa_flags ^ SV_INTERRUPT; 69 osv->sv_mask = osa.sa_mask.__bits[0]; 70 } 71 return (ret); 72 } 73 74 int 75 sigsetmask(mask) 76 int mask; 77 { 78 sigset_t set, oset; 79 int n; 80 81 sigemptyset(&set); 82 set.__bits[0] = mask; 83 n = sigprocmask(SIG_SETMASK, &set, &oset); 84 if (n) 85 return (n); 86 return (oset.__bits[0]); 87 } 88 89 int 90 sigblock(mask) 91 int mask; 92 { 93 sigset_t set, oset; 94 int n; 95 96 sigemptyset(&set); 97 set.__bits[0] = mask; 98 n = sigprocmask(SIG_BLOCK, &set, &oset); 99 if (n) 100 return (n); 101 return (oset.__bits[0]); 102 } 103 104 int 105 sigpause(mask) 106 int mask; 107 { 108 sigset_t set; 109 110 sigemptyset(&set); 111 set.__bits[0] = mask; 112 return (_sigsuspend(&set)); 113 } 114